The International High Relative Profitability pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when mutual fund shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 15% of the average value of its investment portfolio.

Portfolio Turnover, Rate

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15.00%

Expense Example [Heading]

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EXAMPLE

Expense Example Narrative [Text Block]

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This Example is meant to help you compare the cost of investing in the International High Relative Profitability Portfolio with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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The International High Relative Profitability Portfolio purchases securities of large

non-U.S.

companies that Dimensional Fund Advisors LP (the “Advisor”) determines to have high profitability relative to other large capitalization companies in the same country or region, at the time of purchase. In assessing profitability, the Advisor considers different ratios, such as that of earnings or profits from operations relative to book value or assets. The Advisor may also adjust the representation in the Portfolio of an eligible company, or exclude a company, after considering such factors as market capitalization, free float, size, relative price, profitability, momentum, trading strategies, liquidity management, and other factors that the Advisor determines to be appropriate. An equity issuer is considered to have a low relative price (i.e., a value stock) primarily because it has

a low price in relation to its book value. In assessing relative price, the Advisor may consider additional factors such as price to cash flow or price to earnings ratios. The criteria the Advisor uses for assessing relative price and profitability are subject to change from time to time.

The International High Relative Profitability Portfolio intends to purchase securities of large

non-U.S.

companies associated with developed market countries that the Advisor has designated as approved markets. As a

non-fundamental

policy, under normal circumstances, the Portfolio will invest at least 80% of its net assets in securities of companies in the particular

non-U.S.

markets in which the Portfolio invests. The Advisor determines the minimum market capitalization of a large company with respect to each country or region in which the Portfolio invests. Based on market capitalization data as of December 31, 2020, the market capitalization of a large company in any country or region in which the Portfolio invests would be $2,109 million or above. This threshold will change due to market conditions.

The International High Relative Profitability Portfolio may gain exposure to companies in an approved market by purchasing equity securities in the form of depositary receipts or foreign listings, which may be listed or traded outside the issuer’s domicile country. The Portfolio also may purchase or sell futures contracts and options on futures contracts for foreign or U.S. equity securities and indices, to increase or decrease equity market exposure based on actual or expected cash inflows to or outflows from the Portfolio. The Portfolio may invest in exchange-traded funds (ETFs) for the purpose of gaining exposure to the equity markets while maintaining liquidity.

The International High Relative Profitability Portfolio may lend its portfolio securities to generate additional income.

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

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Because the value of your investment in the International High Relative Profitability Portfolio will fluctuate, there is the risk that you will lose money. An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The following is a description of principal risks of investing in the Portfolio.

Foreign Securities and Currencies Risk:

Foreign securities prices may decline or fluctuate because of: (a) economic or political actions of foreign governments, and/or (b) less regulated or liquid securities markets. Investors holding these securities may also be exposed to foreign currency risk (the possibility that foreign currency will fluctuate in value against the U.S. dollar or that a foreign government will convert, or be forced to convert, its currency to another currency, changing its value against the U.S. dollar). The Portfolio does not hedge foreign currency risk.

Depositary receipts are generally subject to the same risks as the foreign securities that they evidence or into which they may be converted. In addition, the underlying issuers of certain depositary receipts, particularly unsponsored or unregistered depositary receipts, are under no obligation to distribute shareholder communications to the holders of such receipts, or to pass through to them any voting rights with respect to the deposited securities. Depositary receipts that are not sponsored by the issuer may be less liquid and there may be less readily available public information about the issuer.

Equity Market Risk:

Even a long-term investment approach cannot guarantee a profit. Economic, market, political, and issuer-specific conditions and events will cause the value of equity securities, and the Portfolio that owns them, to rise or fall. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.

Profitability Investment Risk:

High relative profitability stocks may perform differently from the market as a whole and an investment strategy purchasing these securities may cause the Portfolio to at times underperform equity funds that use other investment strategies.

Value Investment Risk:

Value stocks may perform differently from the market as a whole and an investment strategy purchasing these securities may cause the Portfolio to at times underperform equity funds that use other

investment strategies. Value stocks can react differently to political, economic, and industry developments than the market as a whole and other types of stocks. Value stocks also may underperform the market for long periods of time.

Derivatives Risk:

Derivatives are instruments, such as futures contracts, and options thereon, and foreign currency forward contracts, whose value is derived from that of other assets, rates or indices. The use of derivatives for

non-hedging

purposes may be considered to carry more risk than other types of investments. When the Portfolio uses derivatives, the Portfolio will be directly exposed to the risks of those derivatives. Derivative instruments are subject to a number of risks including counterparty, settlement, liquidity, interest rate, market, credit and management risks, as well as the risk of improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, rate or index, and the Portfolio could lose more than the principal amount invested.

Securities Lending Risk:

Securities lending involves the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, the Portfolio may lose money and there may be a delay in recovering the loaned securities. The Portfolio could also lose money if it does not recover the securities and/or the value of the collateral falls, including the value of investments made with cash collateral. Securities lending also may have certain adverse tax consequences.

Operational Risk:

Operational risks include human error, changes in personnel, system changes, faults in communication, and failures in systems, technology, or processes. Various operational events or circumstances are outside the Advisor’s control, including instances at third parties. The Portfolio and the Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address these risks.

Cyber Security Risk:

The Portfolio’s and its service providers’ use of internet, technology and information systems may expose the Portfolio to potential risks linked to cyber security breaches of those technological or information systems. Cyber security breaches, amongst other things, could allow an unauthorized party to gain access to proprietary information, customer data, or fund assets, or cause the Portfolio and/or its service providers to suffer data corruption or lose operational functionality.

Risk Lose Money [Text]

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Because the value of your investment in the International High Relative Profitability Portfolio will fluctuate, there is the risk that you will lose money.

Risk Not Insured Depository Institution [Text]

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An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance

Performance Narrative [Text Block]

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The bar chart and table immediately following illustrate the variability of the International High Relative Profitability Portfolio’s returns and are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows the changes in the Portfolio’s performance from year to year. The table illustrates how annualized one year and since inception returns, both before and after taxes, compare with those of a broad measure of market performance. The Portfolio’s past performance (before and after taxes) is not an indication of future results. Updated performance information for the Portfolio can be obtained by visiting

http://us.dimensional.com

The

after-tax

returns presented in the table for the International High Relative Profitability Portfolio are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual

after-tax

returns depend on an investor’s tax situation and may differ from those shown in the table. In addition, the

after-tax

returns shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.

Performance Information Illustrates Variability of Returns [Text]

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Performance Availability Website Address [Text]

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http://us.dimensional.com

Performance Past Does Not Indicate Future [Text]

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The Portfolio’s past performance (before and after taxes) is not an indication of future results.

Bar Chart [Heading]

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International High Relative Profitability Portfolio Institutional Class Shares—Total Returns

Bar Chart Closing [Text Block]

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January 2018-December 2020
Highest Quarter		Lowest Quarter
18.60% (4/20–6/20)		-21.51% (1/20–3/20)

Performance Table Heading

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Annualized Returns (%) Periods ending December 31, 2020

Performance Table Uses Highest Federal Rate

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The after-tax returns presented in the table for the International High Relative Profitability Portfolio are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

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In addition, the after-tax returns shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.

International High Relative Profitability Portfolio | Institutional Class

Risk/Return:

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Shareholder Fees (fees paid directly from your investment)

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none

Management Fee

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0.25%

Other Expenses

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0.06%